<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>为导航条添加标题、二级菜单及状态</title>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
</head>

<body>
<!--加入导航条标题-->
<div class="navbar navbar-default" role="navigation">
  　<div class="navbar-header">
  　    <a href="##" class="navbar-brand">慕课网</a>
  　</div>
    <ul class="nav navbar-nav">
	   <li class="active"><a href="##">网站首页</a></li>
       <li><a href="##">系列教程</a></li>
       <li><a href="##">名师介绍</a></li>
       <li><a href="##">成功案例</a></li>
       <li><a href="##">关于我们</a></li>
	 </ul>
</div>
<!--导航条状态及二级菜单-->
<div class="navbar navbar-default" role="navigation">
  　<div class="navbar-header">
  　    <a href="##" class="navbar-brand">慕课网</a>
  　</div>
	<ul class="nav navbar-nav">
	 	<li class="active"><a href="##">网站首页</a></li>
        <li class="dropdown">
          <a href="##" data-toggle="dropdown" class="dropdown-toggle">系列教程<span class="caret"></span></a>
          <ul class="dropdown-menu">
        	<li><a href="##">CSS3</a></li>
        	<li><a href="##">JavaScript</a></li>
        	<li class="disabled"><a href="##">PHP</a></li>
          </ul>
       </li>
       <li><a href="##">名师介绍</a></li>
       <li><a href="##">成功案例</a></li>
       <li><a href="##">关于我们</a></li>
	</ul>
</div>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script> 

</body>
</html>